how to fix P0171 code in Tesla Model 3 Original (2017-2023)?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety while working.

Tools Required:

• OBD-II scanner
• Multimeter
• Socket set
• Torque wrench
• Screwdrivers
• Vacuum gauge (if needed)

2. Inspect and Repair Air Intake System

• Inspect Hoses and Connections:

  • Visually check all vacuum hoses and connections for cracks or disconnections.
  • Replace any damaged hoses.

• Check Air Filter:

  • Remove the air filter and inspect for dirt or blockages.
  • Replace the air filter if it is dirty or clogged.

• Inspect Intake Manifold:

  • Check the intake manifold gaskets for signs of leaks.
  • Replace gaskets if necessary, ensuring proper torque specifications during installation.

3. Test and Clean Fuel System

• Fuel Pressure Check:

  • Attach a fuel pressure gauge to the fuel rail.
  • Compare the fuel pressure readings with manufacturer specifications. Replace the fuel pump if pressure is low.

• Inspect Fuel Injectors:

  • Remove and clean the fuel injectors using a fuel injector cleaning kit.
  • Test injectors for proper spray pattern and resistance.

4. MAF Sensor Inspection

• Remove MAF Sensor:

  • Disconnect the electrical connector and remove the MAF sensor from the air intake.

• Clean MAF Sensor:

  • Use MAF sensor cleaner to gently clean the sensing elements.
  • Reinstall the sensor ensuring it is properly connected.

5. Throttle Body Inspection

• Remove Throttle Body:

  • Disconnect any electrical connectors and remove the throttle body from the intake manifold.

• Clean Throttle Body:

  • Use throttle body cleaner to remove carbon deposits from the throttle plate and housing.
  • Reinstall the throttle body with new gaskets and torque to specifications.